Suction cleaner



Sept 2 y I A. C. BENNETT SUCT'IOH 01.5mm

Filed Sent. 23, 1920 2 Sheba-hoot 2 fizz '5 6'- INVENTOR.

ASHLY 6. BENNETT. wh /M ATTORNEYS new and useful Patented Sept. 2, 1924.

UNITED STATES 1,507,211 PATENT OFFICE.

S q ASHLEY C. BENNETT, OF MINNEAPOLIS, MINNESOTA.

SUCTION CLEANER.

Application filed September 28, 1920. Serial No. 412,282.

To all whom it may concern;

Be it known that I, AsHLnY. C. Bnnmn'r, a citizen of the "United fitatesresiding at Minneapolis, in the county-of liennepm and State ofMinnesota, have invented certain- Improvements in Suction- Cleaners, ofwhich the following is a speci- My invention relates to suctioncleaners,

and has for an object. the provision of a I novel form of suctioncleaner adapted to be i moved over floors for cleaning carpets,'ru andthe like. An object in particular is t e :provision of a device of thischaracter which embodies a centrifugal cyclone dust collectoperatedcharacter adapted to be readily moved over "floors or other surfaces andin which the dust :and dirt are collected without going through the fan,and without the employment of screens and bags.

The full objectsand advantages of my invention will appear in connectionwith the detailed description thereof, andthe novel features embodied inmy inventive idea will be particularly pointed out in the claims.

. In the accompanying drawings which illustrate the application of myinvention in one form,-

Fig. 1 is a side elevational view ;,'of my suction cleaner.- Fig. 2 is atop plan view thereof. Fig. 3 is a view similar to Fig. l but partly invertical sectionto show the interior construction of the deviw. 'Fig, 4is a view :in section onthe line 4+4: of p 3 looking in th'e'directionof the arrows; ig. 5 is a fragmentary view of a portion. ofan auxiliaryfan. x v 1 As illustrated, my cleanerincludesa 1116- tor casing 10 forcontaining a suitable electric motor, a primary fan casin 12, and an aircleaner. casing 14. These .t ree casings for convenience may be madeseparately and secured together in suitable manner" as by bolts 16. A-primary fan 18 in the casing 12' is secured to the motor shaft 20, andto this shaft at the rear of the primary fan is secured a SBCOIIdBJg fan22 which .will 'be' referred to later. i pivotally mounted in openingsthrough opposite sides of the casing- 14 and are prevented from becomingdisengaged by any suitable means such as. washer pieces 25. These pipemembers extend forwardly and unite to form a single pipe member. 27which terminates in an elongated suction head 28. On the member 27 arelugs 30 and 32 through whichextend bolts 34 and 36"which are heldfrictionally in the lugs by means of nuts. The bolts 34 and 36 areprovided with rearward extensions 38 and 40 upon which wheels 42 and 44are rotatably mounted. The extensions 38 and 40 are connected by. a

rod 46 so that when the bolts 34 and 36 are turned, the two wheels willbe raised or lowered in unison and the position of the suction, headwith relation to the surface to be cleaned may thus be regulated. Asbest shown in F igs. 3 and 4, the pipe members 24 and 26 communicatewith troughs 48 and 50 arranged helically within the casing 1% so as toprovide helical passageways which are closed at'their ends into whichthe members 24 and'26 lead, and which dischar e tangentially at stheiropen ends at 52 an two troughs 48 and 50 extend preferably aboutone-fourth of the distance around the inner surface of the casing andhelical ribs 55 are placed in'thegaps between the two troughs.v Abafiieplate 56' is sup centrically within the casing an in spaced relation infront of the rear wall thereof by means of" a su port 58 so as toprevntreversal of direc on of air current at the cen- The air cleaner casingcommunicates 0 through a slot'filin the bottom of the casmg with a.-sealed chamber underneath in which is adapted .tobe placed a receptacleor drawer 62. The margin of the casing at the incoming side of the slotis preferably turned downwardly as shown at 64 to aid in. the dischargeof dirtand dust into the drawer. To permit removal of the drawer 62 fromthe"sealed chamber, ,a hinged door 66 is provided at the rearof thelatter, this door being normally held closed to make the chamberairtight by means of a catchfiS. A casterwheel 70 for supporting therear of: this device isprovided, and this caster wheel is preferablymounted upon thev door 66.

The secondary fan 22, previously-referred .to, is provided with spacedblades 72 extending'froni its hub to an annular rim-'74.

I ,From theouter circumference of this rim pe members 24 and26'areextend a plurality of small blades 76 inclined at an angle ofsubstantially 455, as best shown in Fig. 5. An operating handle' 54. The80 rted con- 35 earrin s:

78 for pushing the cleanei' along the or other surface to' be cleaned isvpi'vot'ally at-- tached to lugs 8Q and 82, and this handle carries acable 84 for conveying current to-the motor for operatin the fans. Thefan casing 12 is provide with slots 86 for the escape of air which isdrawn through the device. I I v The-operation and advantages of myinvention will be readily understood from the foregoing descripti'om'The rotation of the rima fan 18 causes a current of air to drawn intothe suction head 28 and to enter, the air cleaner casing 14 by way ofthe helical passages which give the air a cyclonic movement in clockwisedirection in the embodiment shown as viewed from the- I rear andindicated by.the arrow in Fi 4. Thisrthro'ws solid impurities such asust, dirt, etc. to the outside of the cyclonic movement and some ofthese impurities pass through the annularspace around the baflie '56andinto the space 60 from which-this material gravitates th ough theslot and drops into the recepta le 62. The door .66

' v normally makes an airtight closure for the cham r which contains thereceptacle. The door may be opened. from time to time so that thereceptacle may be withdrawnand the solid matter contained thereinemptied. The ribs 55 not only (assist in maintamin "the cyclonic moement but keep materiafi such as ieces of string, from being drawntoward t e front of the casing; The current of-air passes forwardly inthe central. portion of the air cleaning casin throughthe openingsbetween the blades 2 of the sec? onda fan and out of the device throughment of the. suction head with t e article cleaned, the secondary fanassists in. J ma'intainin'gthe cyclonic movementof the his passing into-the air cleaning casing.

' The small inclined'bl'ades76' upon the pe 7 rlphery of'the secondaryfan assist in dr1ving impurities toward the rear of the air cleaningcasing. -=The device is easily moved about without injury to the flooror article I which is being cleaned and the suction head 28 is readilymaintained in the position which will, 've maximum efliciency Thematerial col ected inthe. receptacle 62 may be readil enigtiedand,thisoperation'does not invo vs 1: e trouble or distributionof'(11115 and dust as is the casein-withdrawing- I the bag strainersemployed in connection'{ m 'Wlth the. usual vaccum cleaning device; No Iin my device, and the air at all timesflowsj strainer is usedin theconstruction-embodied freely through the aircleaner "casin and(discharges ir mj v t-on slots 86. s 5; 13 no l gfigf clogg nfil'as inthejca'se of insures e new the slots 86, the air beingthoroughly'cleaned before it reachesthe fans. When the suction into thedevice is cut down b engagetrou the inside of said, casing to form.Pwfieways for the air entering said casing, a ba a portion of thecircumference of said air I cleaner casing, and 'cooperating'helicalribs extending for the remainder of the circum- I 'ference thereof,

2. A suction cleaner for carpets, rugs and the like comprising a fancasing having dischar e openmgs, a fan in-said casing, an air-c eanercasing attached to said fan casing and communicating therewith, twopipeflmembers-which connect, with the opposite sides ofsaidair"cleaner'casing, twp troughlike members 'helically arranged-onthe inside ofsaid air cleaner casingtoiform helical passageways for theair delivered by said, pipe members,saidtroughlike. members each estending for substantially one-fourth of the l circumference of said aircleaner casing, and

two cooperating helical ribs positioned inthe gaps between said.troughlike. members,

3. A suction cleaner for carpets, rugs and the like comprising a motorcasing, afan casing having dischar' e openings and attached at the rearof id "motor casing, an air cleaner casing attached at the rear of saidlfan casing and communicating thereith, a motor shaft extending throughsaid 1 an casing and into said air cleaner casing,

a rimary fan 'in'said fan casing attached to, 7 said shaft, means forintroducing air into said air cleaner casing, means for giving said aira cyclonic movement in said air cleaner casing a bafile spaced from therear I I said an cleaner casmgfor asslstmg 1n separating solidimpurities from the air, a normany closed airtight chamber com'municab'i ing through a slotjwith said air cleaner casing for receivingsaidimpurities, and a seconda fan-secured to said motor shaft in saidan; cleaner casing for assisting in maintaining said cyclonic movement.I 4..-A suction cleaner for carpets, rugs, and the like, comprisingathorizontally' disposed air cleaner casin pi e membersconnecting withopposite si es 0 said casing, a primary fan for causing a current of airto flow thro h said pipe members into said casing, filikemembersphelically arranged on elical e-in said casing. for assistin 'm'.sep-

.arating solid impuritles from the-a1r, a nor- I mally closed air-tightchamber associated wall of no with said dead-air space for receivingsaid impurities, a secondary fan on the shaft of said primar fan forassist in in maintaining' t e cyc onic movement 0 air produced by saidtroughlike members, and small inclined blades on the periphery of saidsecondar fan for causing rearward movement of sai impurities.

5. A suction cleaner for carpets, rugs and the like comprising ahorizontally disposed air cleaner casing, pipe members connecting withopposite sides of said casing, a primary fan located at the front ofsaid casing for causing a current of air to flow through said pipemembers into said casing, troughlike members spaced from each other andhelically arranged on the inside of said casing to form hellc alpassageways for the air entering said casing,helic al ribs in the gapsbetween said troughlike members, a bafiie supported in spaced relationfrom the rear wall of said casing for assisting in separating solidimpurities from the air, a normally closed air-tight chamber incommunication through a' slot with said dead-airspace for receiving saidim urities, a 'secondary'fan mounted on the s aft of said primary fan atthe rear of the latter for assistin in main- I taining the cyclonicmovement 0 air produced b said troughlike members, and small incline'blades on the periphery of said secondary fan for causing rearwardmovement of said impurities.

In testimony whereof I hereunto afiix my signature.

'- ASHLEY- (I. BENNETT.

